Preparing to test on the C5471

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@7 42af7a65-404d-4744-a932-0658087f49c3

arch/c5471/defconfig

@@ -98,12 +98,20 @@ CONFIG_ARCH_KMALLOC=n
 CONFIG_ARCH_KZMALLOC=n
 CONFIG_ARCH_KFREE=n
 
+#
 # General Compile environment setup
 #
 # CONFIG_HAVE_LONG_LONG - enable if your architecture supports
 #   long long types and if you plan to use them
 CONFIG_HAVE_LONG_LONG=n
 
+#
+# General build options
+#
+# CONFIG_RRLOAD_BINY - make the rrload binary format used with
+#   BSPs from www.ridgerun.com
+CONFIG_RRLOAD_BINARY=y
+
 #
 # Sizes of configurable things (0 disables)
 #

arch/c5471/src/Makefile

@@ -38,7 +38,8 @@
 MKDEP 	= $(TOPDIR)/tools/mkdeps.sh
 CFLAGS	+= -I$(TOPDIR)/sched
 
-ASRCS	= up_vectors.S up_saveusercontext.S up_fullcontextrestore.S
+ASRCS	= up_vectors.S up_saveusercontext.S up_fullcontextrestore.S \
+	  up_lowputc.S
 AOBJS	= $(ASRCS:.S=.o)
 
 CSRCS	= up_initialize.c up_initialstate.c up_idle.c \

arch/c5471/src/up_lowputc.S

@@ -0,0 +1,127 @@
+/**************************************************************************
+ * up_lowputc.S
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ **************************************************************************/
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+
+#include <nuttx/config.h>
+#include "up_internal.h"
+#include "c5471.h"
+
+/**************************************************************************
+ * Private Definitions
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Types
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Function Prototypes
+ **************************************************************************/
+
+/**************************************************************************
+ * Global Variables
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Variables
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Functions
+ **************************************************************************/
+
+/**************************************************************************
+ * Public Functions
+ **************************************************************************/
+
+/**************************************************************************
+ * Name: up_lowputc
+ **************************************************************************/
+
+/* This assembly language version has the advantage that it can does not
+ * require a C stack and uses only r0-r1.  Hence it can be used during
+ * early boot phases.
+ */
+
+	.text
+	.global	up_putc
+	.type	up_lowputc, function
+up_lowputc:
+	/* On entry, r0 holds the character to be printed */
+
+#ifdef CONFIG_SERIAL_IRDA_CONSOLE
+	ldr	r2, =UART_IRDA_BASE	/* r2=IRDA UART base */
+#else
+	ldr	r2, =UART_MODEM_BASE	/* r2=Modem UART base */
+#endif
+
+	/* Poll bit 0 of the UART_SSR register.  When the bit
+	 * is clear, the TX FIFO is no longer full
+	 */
+
+1:	ldr	r1, [r2, #UART_SSR_OFFS]
+	tst	r1, #UART_SSR_TXFULL
+	bne	1b
+
+	/* Send the character by writing it into the UART_THR
+	 * register.
+	 */
+
+	str     r0, [r2, #UART_THR_OFFS]
+
+	/* Wait for the tranmsit holding regiser (THR) to be
+	 * emptied. This is detemined when bit 6 of the LSR
+	 * is set.
+	 */
+
+2:	ldr     r1, [r2, #UART_LSR_OFFS]
+	tst     r1, #0x00000020
+	beq     2b
+
+	/* If the character that we just sent was a linefeed,
+	 * then send a carriage return as well.
+	 */
+
+	teq     r0, #'\n'
+	moveq   r0, #'\r'
+	beq     1b
+
+	/* And return */
+
+	mov     pc, lr
+

arch/sim/defconfig

@@ -96,12 +96,20 @@ CONFIG_ARCH_KMALLOC=n
 CONFIG_ARCH_KZMALLOC=n
 CONFIG_ARCH_KFREE=n
 
+#
 # General Compile environment setup
 #
 # CONFIG_HAVE_LONG_LONG - enable if your architecture supports
 #   long long types and if you plan to use them
 CONFIG_HAVE_LONG_LONG=n
 
+#
+# General build options
+#
+# CONFIG_RRLOAD_BINY - make the rrload binary format used with
+#   BSPs from www.ridgerun.com
+CONFIG_RRLOAD_BINARY=n
+
 #
 # Sizes of configurable things (0 disables)
 #